/* $Id : region.js 4865 2007-01-31 14:04:10Z paulgao $ */

var region = new Object();

region.isAdmin = false;



/* *
 * 载入指定的国家下所有的省份
 *
 * @country integer     国家的编号
 * @selName string      列表框的名称
 */
region.loadProvinces = function(country, selName)
{
    var objName = (typeof selName == "undefined") ? "selProvinces" : selName;

    region.loadRegions(country, 1, objName);
}

/* *
 * 载入指定的省份下所有的城市
 *
 * @province    integer 省份的编号
 * @selName     string  列表框的名称
 */
region.loadCities = function(province, selName)
{
    var objName = (typeof selName == "undefined") ? "selCities" : selName;

    region.loadRegions(province, 2, objName);
}

/* *
 * 载入指定的城市下的区 / 县
 *
 * @city    integer     城市的编号
 * @selName string      列表框的名称
 */
region.loadDistricts = function(city, selName)
{
    var objName = (typeof selName == "undefined") ? "selDistricts" : selName;

    region.loadRegions(city, 3, objName);
}

/* *
 * 处理下拉列表改变的函数
 *
 * @obj     object  下拉列表
 * @type    integer 类型
 * @selName string  目标列表框的名称
 */
region.changed = function(obj, type, selName)
{
    var parent = obj.options[obj.selectedIndex].value;

    region.loadRegions(parent, type, selName);
}

region.response = function(result, text_result)
{
    var sel = document.getElementById(result.target);

    sel.length = 1;
    sel.selectedIndex = 0;
    sel.style.display = (result.regions.length == 0 && ! region.isAdmin && result.type + 0 == 3) ? "none" : '';

    if (document.all)
    {
        sel.fireEvent("onchange");
    }
    else
    {
        var evt = document.createEvent("HTMLEvents");
        evt.initEvent('change', true, true);
        sel.dispatchEvent(evt);
    }

    if (result.regions)
    {
        for (i = 0; i < result.regions.length; i ++ )
        {
            var opt = document.createElement("OPTION");
            opt.value = result.regions[i].region_id;
            opt.text  = result.regions[i].region_name;

            sel.options.add(opt);
        }
    }
}

region.getFileName = function()
{
    if (region.isAdmin)
    {
        return "../region.php";
    }
    else
    {
        return "region.php";
    }
}
